Lock



-March 12, 1940. "r. H. HARRISON LOCK Filed Feb. 9, 1939 2 Sheets-Sheet 1 9 Z 1 0m m .20" flx w x" r g r Ha i. 5 f, M Q 5 4 T 4 5M March 12, 1940,

T. H. HARRISON LOCK Filed Feb. 9, 1939 2 Sheets-Sheet 2 THHarr 2'50):

' ATTO R N EYS Patented Mar. 12, 1940 UNITED STATES rA'II-NT OFFIE 1 Claim.

hasp staple is completely veiled when the hasp is engaged therewith and the lock applied for fastening the hasp so that the hasp can not be tampered with for the opening thereof when locked, the lock being key-operated for the un- 16' looking thereof.

Another object of the invention is the provision' of a lock of this character, wherein a sliding bolt is arranged within a shell or casing and this bolt is adapted for locking engagement with a hasp staple so that the hasp will be made fast with the staple and is releasable on the operation of the bolt, being thrown to releasing position through a key of special construction which controls locking pins arranged in a determined combination.

A further object of the invention is the provision of a lock of this character, wherein the same is jimmyproof and foolproof and is incapable of being put on backwards or upside down for the locking of a hasp with its staple, the lock being usable for the locking of sliding or swinging doors or the like for buildings, gates or other closures or is adaptable for dog collars, cedar chests, or any article where a padlock is needed.

A still further object of the invention is the provision of a lock of this character, wherein the construction thereof is novel in its entirety and is easily applied for locking purposes or removed for unlocking purposes.

A still further object of the invention is the provision of a lock of this character, which is simple in its construction, thoroughly reliable and efficient in operation, neat in appearance, possessed of few parts yet being strong and durable, and is inexpensive to manufacture.

With these and other objects in view, the invention consists in the features of construction, combination and arrangement of parts as will be hereinafter more fully described, illustrated in the accompanying drawings, which disclose the preferred and modified forms of embodiment ofthe invention and pointed out in the claim hereunto appended.

In the accompanying drawings:

Figure 1 is an elevation of a lock constructed in accordance with the invention in locked posi tion.

Figure 2 is a sectional view taken on the line (c1. rm-a2) 22 of Figure 1 looking in the direction of the arrows.

Figure 3 is a sectional View taken on the line 33 of Figure 2 looking in the direction of the arrows.

Figure 4 is a sectional view on the line 4-4 of Figure 3 looking in the direction of the arrows.

Figure 5 is a fragmentary detail transverse sectional view through the lock taken on the line 55 of Figure 3.

Figure 6 is a side elevation of the key for the lock.

Figure 7 is an end view thereof.

Figure 8 is an elevation showing by dotted lines certain modified adjuncts of the lock. I

Figure 9 is a sectional view taken on the line 99 of Figure 8 looking in the direction of the arrows.

Figure 10 is a sectional view on the line Ill-Ill of Figure 8 looking in the direction of the arrows.

Figure 11 isa sectional View on the line I l| l of Figure 8 looking in the direction of the arrows.

Similar reference characters indicate corresponding parts throughout the several views in the drawings.

it I

Referring to the drawings in detail, the imfitting with the said hasp when the door is closed and is to be locked.

The lock comprises a cover casing or shell 14, in this instance being of substantially circular formation, and a bottom or base section IS, the latter being provided with a slot 16 for the reception of the staple IS. The bottom section 45 is counterseated in the shell or casing Hi and is made fast thereto by suitable fasteners ll.- This casing or shell it opens at the inner side thereof and such open side is covered by the bottom section IS.

The bottom section has a thickened portion is which is telescoped into the shell or casing l4 and is provided with a guideway 19 intersected by the slot 16 for a spring tensioned sliding bolt 20, the tensioning spring being indicated at 2|, and this bolt is engageable with the staple 13 when introduced into the slot it for the locking of the hasp l2 with said staple.

Rotatably fitted in the frontal portion 22 of the casing or shell 4 is a key-actuated locking pin cylinder 23 accessible through a keyhole 24 opening through said frontal portion 22 of the casing or shell 14 at the outer side thereof. This cylinder 23 is formed with a dogging arm 25 engageable with a striking pin 26 projected from the bolt 20. The cylinder 23 is fitted with locking pins 21 operated by a key 28 insertable in the keyhole 24, its stem being socketed at 29 for an arbor 33 on the cylinder 23 while concentrically of this socket 2Q'are the stepped bits 3| for engaging the pins 2'i' so that these will release the cylinder 23 and by the turning of the key 28 the dogging arm 25 will be actuated to move the bolt 20 to releasing position or for disengaging it from the staple IS. The locking pins 21 are arranged for a determined combination of bits 3| on the key 28 so as to enable the unlocking of the lock in the use of the key congruous with the combination setup of the locking pins 21. A change of the combination of the lock may be had by varying the locking pins 21, as is conventional. Normally the locking pins 21 hold the cylinder 23 against rotation so that the lock can not be operated for the unlocking thereof except by the key 23 having the bits 3| set up for the combination of the locking pins 21.

In Figures 8, 9 and 10 of the drawings there is shown a slight modification of the lock wherein the bottom section 32 for the shell or casing 33 has built at opposite sides of the staple slot 33 in said bottom section guide lugs 35 for a springpressed slidable locking bolt 36, the spring therefor being indicated at 31, and this bolt 36 is retracted or moved to releasing or unlocking position similarly to the bolt 20 hereinbefore set forth. The turning cylinder 38 is rotatably fitted in a barrel 39 built with the frontal portion 40 of the shell or casing 33 and the dogging member ll for the said bolt 36 is stemmed at 42 with the turning cylinder 38, as is clearly shown in Figure 10 of the drawings. The arrangement of the locking pins 43 in association with the cylinder 38 and the barrel 39 is clearly shown in Figure 11 of the drawings.

The pins 27 and 43 are of the tumbler pin type.

The fasteners for securing the staple in place are concealed against access by the hasp l2 and similarly the fasteners for the hasp are concealed from access when the said hasp is locked with the staple, the lock being foolproof and also is jimmyproof.

What is claimed is:

A key-operated lock comprising a fixed carrying body having a circular depression opening outwardly thereof, a rotatable, bolt-throiwing, keyactuated, locking pin cylinder countersunk in said depression, a central arbor projecting from the cylinder and journaled in said carrying body, series of locking pins fitting the said body and cylinder concentric to the arbor and cooperating with each other for the freeing and holding fast of the said cylinder, the said arbor being projected into the depression for access through the outwardly opening portion of the depression, said lock being adapted to be operated by a socketed key having a socket receiving the arbor for the separable interfitting of the key and arbor with each other, steppe-d bits arranged on the in conformity with the arrangement of the 10 in pins for the control of the latter upon the interfittlng of the key and arbor with each other, and a bolt-throwing arm connected to the arbor for maintaining the cylinder within the depression and rotatably fitted with the carrying body.

THOMAS H. HARRISON. 

